Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
a3online.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 15:41:21 UTC · ↺ Refresh
MX Hostnames
- aspmx3.googlemail.com
- aspmx2.googlemail.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
- aspmx4.googlemail.com
- aspmx5.googlemail.com
MX Priorities
- alt1.aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 10
- aspmx2.googlemail.com: 20
- aspmx3.googlemail.com: 20
- aspmx4.googlemail.com: 20
- aspmx5.googlemail.com: 20
- aspmx.l.google.com: 5
A / AAAA Records
- 192.252.144.31 ↩ s281.sureserver.com
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
SOA Record
Raw SOA
ns1.server281.com hostmaster.a3online.com 1774959863 16384 2048 1048576 2560
Primary NS (mname)
ns1.server281.com
Admin Email (rname)
hostmaster@a3online.com
Serial
1774959863
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
ns1.server281.com
ns2.server281.com
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- "v=spf1 ip4:99.175.137.197 a mx a:mx01.sbcglobal.net a:smtp.sbcglobal.net [email protected]:abc123 a:neko.a3online.com include:aspmx.googlemail.com include:joyent.net ~all"
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